Shuttleless looms

ABSTRACT

A STABILIZING ARM IS MOUNTED ON A VERTICAL AXIS FOR RECIPROCATORY PIVOTAL MOVEMENT TO SUPPORT AND GUIDE THE MOVEMENT OF THE ROCKING ARM OF AN ACUTATING LINKAGE ASSEMBLY FOR THE WEFT INSERTER OF A SHUTTLESS LOOM.

United States Patent Inventor Jose Bassa Basart Calle Bailen 150, Barcelona, Spain Appl. No. 828,146 Filed May 27, 1969 Patented June 28.1971 Priority May 30, 1970 Spain 354,921

SHU'I'ILELESS LOOMS 3 Claims, 2 Drawing Figs.

11.8. CI. 139/123 Int. Cl D03d 47/00 {50] Field of Search 139/122- [56] References Cited UNITED STATES PATENTS 2,304,l95 l2/l942 Payne 139/123 2,837,124 6/1958 Ancet et al. 139/123 Primary Examiner- Henry S. J audon Attorney-Christen & Sabol ABSTRACT: A stabilizing arm is mounted on a vertical axis for reciprocatory pivotal movement to support and guide the movement of the rocking arm of an actuating linkage assembly for the weft inserter of a shuttleless loom.

PATENTEU M28 671 SHEET 2 BF 2 SHUTTLELESS LOOMS The present invention relates to improvements in shuttleless looms, of the type in which the weft yarn supply is placed in a fixed location laterally of the loom, and is inserted in the shed by a rigid inserting member, the uninterrupted alternating movement of which is obtained by means of a connecting rod and crank device, as described in U.S-. Pat. No. 2,837,124, issued June 3, 1958 for Shuttleless Weaving Loom.

The improvements which are the object of the present invention relate to a substantial improvement of the above-mentioned system, for the reduction of stress, elimination of vibrations, better stability of the operation of the machine and particularly a substantial increase in the speed of the loom, which permits the use of looms of greater width.

These improvements consist in incorporating in the connecting rod and crank device, an oscillating stabilizing arm hinged at its one end to a vertical shaft supported at a support point located in alignment with the path of the rigid inserting member outside of the loom, in such a manner that the other extremity of the stabilizing arm is connected in turn to the rocking arm of the rigid inserting member, at the same hinging point of said arm with the connecting rod and crank device.

The support point of the stabilizing arm located in alignment with the path of the rigid inserting member and outside of the loom, is composed of a vertical support, which is supported and attached at its lower end onto the floor which sup ports the loom and extends at its upper end below the guides of the rigid inserting member, and supports the stabilizing arm for oscillating rotation on said vertical support. The other extremity of the stabilizing arm is hingedly connected to the driving connection point of a rocking arm which carries the rigid inserting member.

For better understanding of the invention, a nonlimiting example is described hereinafter, with reference to the attached drawings.

FIG. 1 is a diagrammatic plan view of the loom, to which is applied the support and stabilizing arm which are the objects of the present invention.

FIG. 2 is a diagrammatic perspective view along arrow A of FIG. 1, of the support and stabilizing arm which are the object of the present invention, with partial illustration also of the guides of the rigid inserting member and part of the arm carrying said member.

F l0. 1 shows a loom composed of a frame 2, which carries laterally an electric motor 5 which moves a pulley 7 through a belt 6 affixed on a shaft 8 placed vertically in the plane of symmetry of the body of the loom.

This vertical shaft 8 carries at its upper extremity a handle, or crank, 10 hinged to the extremity 15' of a connecting rod 15, the extremity 15" of said connecting rod being hinged at 16 to a rocking arm 17. Said arm 17 is similarly hinged at one of its extremities 17 to another carrier arm 18 which turns on a vertical pivot 19 placed on frame 2. The other extremity 17' of ann 17 is hingedly connected to traveler 21 by a slider 21', the rigid inserting member 23 being mounted on said traveler 21, which slides on guides 22.

The extremity l of the oscillating, stabilizing arm 1 is pivotally connected at point 16 to the previously described assembly, the otherextremity 1" of said arm being supported on a vertical support 4 by a vertical shaft 9, and vertically extending bearings 11 and 11. This vertical support 4 is located in the middle of the path of the rigid inserting member 23, is supported and affixed solidly to the floor which supports the loom at its lower extremity 4 and its upper extremity 4"is affixed below guides 22.

The rigid inserting member 23 (FIG. 1) is actuated with a continuous reciprocating motion by means of the vertical rotary shaft 8, the crank 10, the connecting rod 15, the rocking arm 17, the carrier 18 and the traveler 21, the whole unit being guided not only through traveler 21 over guides 22 and channels 24 and 25, but also because the movable pivot 16 of arm 17 is supported in oscillation by the extremity 1' of the stabilizin arm l whose other extremita l is suppor ted on support thus eliminating the stress an vibrations which occurred before this arm 1 was applied, since support 4 is solidly affixed to the floor, thus resulting in a better stability in the operation of the machine and particularly in a substantial increase in the speed of the loom.

lclaim:

1. ln a shuttleless loom of the type having a fixed weft supply and a weft-inserting means reciprocatorily movable transversely of the loom, said inserting means being actuated by a rocking arm, one end of the rocking arm being movably guided by transverse slide means, the other end of the rocking arm being pivotally connected with a carrier arm having a pivotal connection with the frame of the loom, said rocking arm having a medial pivotal connection with a reciprocatorily driven connecting rod, the combination including a stabilizing arm and support means to position one end of said stabilizing arm for recriprocatory movement about a vertical axis disposed in the same plane with the transverse slide means of the loom, vertically extending bearing means being provided along the axis, the other end of the stabilizing arm being connected with the rocking arm at said medial pivotal connection, whereby the stabilizing arm can support some of the weight of the rocking arm.

2. The invention defined in claim I, wherein said support means includes means for mounting the support means on the floor which supports the loom.

3. The invention defined in claim I, wherein said vertically extending bearings means includes at least two vertical spaced bearings. 

